Paint or varnish remover.



No Drawing.

CARLETON Emsi'w" LARCHMONT, NEW roan,

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assionon To onannnorn 'cnn IoAL onrona'rr'olv or wnsrvmemm.

rainrjonlvhnnfsn Removes.

To all whom it may concern."

Be it known that I, CARLn'roN ELLIS, a citizen of the UnitedStates, and now a" resident of Larchmont, in the county of Westchester and State of New York, have made certain new and useful Inventions Relating to Paint or Varnish Removers, of which the following'is a specification.

This invention relates to paint or' varnish removers and relates especiallylto removers comprising deodorized" light oil of hard wood tar and other solvents.

In'the destructive distillation of wood for" the production of wood alcohol considerable oil of tar is developed as a by-product.

This material has been practically useless for commercial purposes because offlitsextremely OffGIlSlVG odor which alone is sufiicient to prevent its utilization as a general solvent in most cases. This oil of tar, especially that derived from destructive distillation of hard wood and condensing between the temperatures of 7 5? to 175 (happroximately may be utilized as follows. The crude oil may be conveniently distilled in an ordinary distilling apparatus and the distillates collected up to about-180 (3., that is, until the-distillate'has about the specific gravity of water. This distillate is then preferably redistilled in a column still provided with an efiicient dephlegmator and the distillates between about 100 and 165 C. are collected, thus excluding many of the higher boiling point ingredients of the original material, thus securing a light oil of hard wood tar which is more desirable because free from many of the undesirable ingredients of the original crude material.

' This oilis then preferably -deodorized, that 40 is, deprived of its disagreeable odor to a considerable extent by treatment withmetallic sodium or similar material which seems to combine with organic substances of this character to form polymeric bodies of higher boiling point so as to be more readily separable from the other components. Metallic sodium also seems to reduce certain unsaturated organic compounds of this character by the action of the nascent hydrogen liberated, the resulting saturated bodies having very much less odor, This deodorizing process may be conveniently carried out in any suitable container, such as a steam jacketed tank provided with suitable agitating means into which the oil of Specification of Letters Patent.

Application filed reprua fy .21, 19.07. Serial No. 858,578.

, sodium or other 'material.

Patented July27,1915.

tar and the desired smallI proportion of u sodium or similar .material, preferably in granular form, is placedand preferably agitated for several hours at a temperature of 40 to- 50 ;C.': Subsequently the material may be redlstilled or in some cases may be washed severaltimes by running water slightlyacidulated with acetic or other acid Into the container and agitating the same so as to neutrallze and remove any remaining .The resulting deodorized-light 011 bf as I 'wood, tar has :a specific gravity from about ,885 -to,'.9.05 and isanenergetic solvent for ordinary paints and varnishes. It also dissolves'parafiin yvaX quitereadily. This materialmay'be used in paint or varnish removers lnlconnection with suitable thinning solvent agents," such as loosening finish solvent material', that is, finish solvents of a generally alcoholic character or action in removers, such as grain orwood alcohol-or bodies of a ketone character, such as acetone,

'of the waxy or soapy 'bodies. All these ingredients are, of course, preferably thoroughly incorporated by agitation under the desired moderate heat, the waxy or soapy bodies being'preferably first dissolved in the more energetic wax solvents, although this is not always necessary. An illustrativefremover of this character may be prepared according to the following, formula: deodorlzed light oil of hard wood tar, 50 parts, benzol 20 parts, oil of acetone 15 parts, ceresin wax 3 parts, carnauba wax 1};

' part. Another illustrative remover may comprise. deodorized light oil of hard woodtar 40 parts, heavy benzin 20 parts,'methyl ethyl ketone 10 parts, ceresin wax 1 part,

and light infusori-al earth 5 parts. Another illustrative remover more especially adapted for dipping or tank work may comprise-lightoil of wood tar 50 parts, paraflin wax 1 part, light kerosene parts and commercial xylol comprising some toluol, cumol "and mesitylen ej parts, although as indicated the stifiening material is not necessary .in all cases.

' mately deodorized light oil of hard Wood tar 50- parts, benzol 20 parts, acetone oil 15 parts, ceresin wax 3 parts and carnauba wax PaI Thfini'sh remover comprlsing app mately'deodorized light'oil of hardwood tar 50 parts, benzol 20 parts, acetone oil'15parts and stifiening material including a waxy body; i

' 3. The matelydeodorized oil of wood tar 50 parts, penetrating finish solvent material 20 arts, loosening finishsolvent material and stilfening material. g v 4. The finish removercomprising a] large proportion of deodorized light oil of wood tar with which have beenincorporated loosening finish solvent material and stiffening material including 'a waxy body.

5. The finish remover c mprising a large proportion of light oil of hard wood tar with which have been incorporated ,pene- 'trating finish solvent material and loosening finish'solvent material and stifiening materiaL.

6. The finish remover comprising a large proportion of'deodoriz'edlight oil of wood tar with which have been incorporated loosening finish solvent material and stifi'ening material.

7. The'finis'h remover consisting large finish remover comprising approxihard '- part of deodorized oil. of wood tar with which has been incorporated stiffening material including a waxy body.

8. The finish remover comprisingalarge.

proportion of deodorized oil of wood tar with which have been incorporated a miscible thinning solvent ag nt'and stifiening material including a waxy body;

9. The finish remover comprising a-large proportion of deodorized oil of wood tar with which have been incorporated'thinning finish solvent material including loosening solvent material and stifl'ening material including a waxy body.

i 10. The finish remover comprising a large .proportion of deodorized light oil of hard wood tar with which miscible loosening fin ish solvent material has been incorporated.

11. The finish remover comprising a large proportion of deodorized light oil of hard wood tar with which misciblethinning solvent material has been incorporated. i, 12. The finish remover comprisinglight oil of hard Woodtar having a specific gravity between about .885 and .905, and thinning finish solvent material miscible therewit 13.. The finish remover consisting in large part of deodorized oil of tar with which has been incorporated miscible finish solvent material. Y

14. The finish remover comprising light oil of hard wood tar having a specific gravity between about .885 and .905, and a volatile organic finish solvent miscible therewith.

15. The finish remover consisting in large part-of deodorized light oil of wood tar with which has been incorporated miscible finish solvent material.

Witnesses: -HARRY L. DUNCAN,

Jnssm B. KAY.

CARLETON nnis; 

